I have been searching a lot for this, but can't find the expression. I'm wondering if there is a phrase that is used a lot for this.
At work, it happens a lot in many organizations that people try to do someone else's job to show off themselves and their capabilities. The motivation behind this is usually either to get a raise, or to show their boss that the current person is not doing their job well enough, and they can replace that person.
Is there a phrase or expression for this act?
Best Answer
The closest I can think of is being after someone's job. This is a common and idiomatic expression.
However, being after smb's job can manifest itself in many ways. It's not limited to doing someone else's work. It can involve scheming, currying favor with superiors, etc.
(typologycentral.com)